369 lines
14 KiB
Python
369 lines
14 KiB
Python
# Portions of this file incorporate code licensed under the
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# BSD 2-Clause License. See COPYING.
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# There is nothing fundamental about the Arty A7(35|100)T to this
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# design, but another eval board will require some porting.
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from migen import *
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import litex_boards.platforms.digilent_arty as board_spec
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from litex.soc.cores.gpio import GPIOTristate
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from litex.soc.integration.builder import Builder
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from litex.build.generic_platform import IOStandard, Pins, Subsignal
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from litex.soc.integration.soc_core import SoCCore
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from litex.soc.cores.clock import S7PLL, S7IDELAYCTRL
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from litex.soc.interconnect.csr import AutoCSR, Module, CSRStorage, CSRStatus
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from litedram.phy import s7ddrphy
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from litedram.modules import MT41K128M16
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from litedram.frontend.dma import LiteDRAMDMAReader
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from liteeth.phy.mii import LiteEthPHYMII
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# Refer to `A7-constraints.xdc` for pin names.
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# IO with Subsignals make Record types, which have the name of the
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# subsignal as an attribute.
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io = [
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("dac_ss_L", 0, Pins("G13 D13 E15 J17 U12 U14 D4 E2"), IOStandard("LVCMOS33")),
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("dac_mosi", 0, Pins("B11 B18 E16 J18 V12 V14 D3 D2"), IOStandard("LVCMOS33")),
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("dac_miso", 0, Pins("A11 A18 D15 K15 V10 T13 F4 H2"), IOStandard("LVCMOS33")),
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("dac_sck", 0, Pins("D12 K16 C15 J15 V11 U13 F3 G2"), IOStandard("LVCMOS33")),
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("adc_conv", 0, Pins("V15 T11 N15 U18 U11 R10 R16 U17"), IOStandard("LVCMOS33")),
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("adc_sck", 0, Pins("U16 R12 M16 R17 V16 R11 N16 T18"), IOStandard("LVCMOS33")),
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("adc_sdo", 0, Pins("P14 T14 V17 P17 M13 R13 N14 R18"), IOStandard("LVCMOS33"))
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]
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class Base(Module, AutoCSR):
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def __init__(self, clk, sdram, platform):
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for i in range(0,8):
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setattr(self, f"dac_sel_{i}", CSRStorage(3, name=f"dac_sel_{i}"))
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setattr(self, f"dac_finished_{i}", CSRStatus(1, name=f"dac_finished_{i}"))
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setattr(self, f"dac_arm_{i}", CSRStorage(1, name=f"dac_arm_{i}"))
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setattr(self, f"from_dac_{i}", CSRStatus(24, name=f"from_dac_{i}"))
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setattr(self, f"to_dac_{i}", CSRStorage(24, name=f"to_dac_{i}"))
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setattr(self, f"wf_arm_{i}", CSRStorage(1, name=f"wf_arm_{i}"))
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setattr(self, f"wf_halt_on_finish_{i}", CSRStorage(1, name=f"wf_halt_on_finish_{i}")),
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setattr(self, f"wf_finished_{i}", CSRStatus(1, name=f"wf_finished_{i}")),
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setattr(self, f"wf_time_to_wait_{i}", CSRStorage(16, name=f"wf_time_to_wait_{i}"))
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setattr(self, f"wf_refresh_start_{i}", CSRStorage(1, name=f"wf_refresh_start_{i}"))
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setattr(self, f"wf_refresh_finished_{i}", CSRStatus(1, name=f"wf_refresh_finished_{i}"))
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setattr(self, f"wf_start_addr_{i}", CSRStorage(32, name=f"wf_start_addr_{i}"))
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port = sdram.crossbar.get_port()
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setattr(self, f"wf_sdram_{i}", LiteDRAMDMAReader(port))
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setattr(self, f"adc_finished_{i}", CSRStatus(1, name=f"adc_finished_{i}"))
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setattr(self, f"adc_arm_{i}", CSRStorage(1, name=f"adc_arm_{i}"))
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setattr(self, f"from_adc_{i}", CSRStatus(32, name=f"from_adc_{i}"))
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self.adc_sel_0 = CSRStorage(2)
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self.cl_in_loop = CSRStatus(1)
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self.cl_cmd = CSRStorage(64)
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self.cl_word_in = CSRStorage(32)
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self.cl_word_out = CSRStatus(32)
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self.cl_start_cmd = CSRStorage(1)
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self.cl_finish_cmd = CSRStatus(1)
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self.specials += Instance("base",
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i_clk = clk,
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i_dac_miso = platform.request("dac_miso"),
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o_dac_mosi = platform.request("dac_mosi"),
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o_dac_sck = platform.request("dac_sck"),
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o_dac_ss_L = platform.request("dac_ss_L"),
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o_adc_conv = platform.request("adc_conv"),
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i_adc_sdo = platform.request("adc_sdo"),
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o_adc_sck = platform.request("adc_sck"),
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# dac_0
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i_dac_sel_0 = self.dac_sel_0.storage,
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o_dac_finished_0 = self.dac_finished_0.status,
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i_dac_arm_0 = self.dac_arm_0.storage,
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o_from_dac_0 = self.from_dac_0.status,
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i_to_dac_0 = self.to_dac_0.storage,
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i_wf_arm_0 = self.wf_arm_0.storage,
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i_wf_time_to_wait_0 = self.wf_time_to_wait_0.storage,
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i_wf_refresh_start_0 = self.wf_refresh_start_0.storage,
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o_wf_refresh_finished_0 = self.wf_refresh_finished_0.status,
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o_wf_start_addr_0 = self.wf_start_addr_0.storage,
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o_wf_ram_dma_addr_0 = self.wf_sdram_0.sink.address,
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i_wf_ram_word_0 = self.wf_sdram_0.source.data,
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o_wf_ram_read_0 = self.wf_sdram_0.sink.valid,
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i_wf_ram_valid_0 = self.wf_sdram_0.source.valid,
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# dac_1
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i_dac_sel_1 = self.dac_sel_1.storage,
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o_dac_finished_1 = self.dac_finished_1.status,
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i_dac_arm_1 = self.dac_arm_1.storage,
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o_from_dac_1 = self.from_dac_1.status,
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i_to_dac_1 = self.to_dac_1.storage,
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i_wf_arm_1 = self.wf_arm_1.storage,
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i_wf_time_to_wait_1 = self.wf_time_to_wait_1.storage,
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i_wf_refresh_start_1 = self.wf_refresh_start_1.storage,
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o_wf_refresh_finished_1 = self.wf_refresh_finished_1.status,
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o_wf_start_addr_1 = self.wf_start_addr_1.storage,
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o_wf_ram_dma_addr_1 = self.wf_sdram_1.sink.address,
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i_wf_ram_word_1 = self.wf_sdram_1.source.data,
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o_wf_ram_read_1 = self.wf_sdram_1.sink.valid,
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i_wf_ram_valid_1 = self.wf_sdram_1.source.valid,
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# dac_2
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i_dac_sel_2 = self.dac_sel_2.storage,
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o_dac_finished_2 = self.dac_finished_2.status,
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i_dac_arm_2 = self.dac_arm_2.storage,
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o_from_dac_2 = self.from_dac_2.status,
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i_to_dac_2 = self.to_dac_2.storage,
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i_wf_arm_2 = self.wf_arm_2.storage,
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i_wf_time_to_wait_2 = self.wf_time_to_wait_2.storage,
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i_wf_refresh_start_2 = self.wf_refresh_start_2.storage,
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o_wf_refresh_finished_2 = self.wf_refresh_finished_2.status,
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o_wf_start_addr_2 = self.wf_start_addr_2.storage,
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o_wf_ram_dma_addr_2 = self.wf_sdram_2.sink.address,
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i_wf_ram_word_2 = self.wf_sdram_2.source.data,
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o_wf_ram_read_2 = self.wf_sdram_2.sink.valid,
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i_wf_ram_valid_2 = self.wf_sdram_2.source.valid,
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# dac_3
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i_dac_sel_3 = self.dac_sel_3.storage,
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o_dac_finished_3 = self.dac_finished_3.status,
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i_dac_arm_3 = self.dac_arm_3.storage,
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o_from_dac_3 = self.from_dac_3.status,
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i_to_dac_3 = self.to_dac_3.storage,
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i_wf_arm_3 = self.wf_arm_3.storage,
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i_wf_time_to_wait_3 = self.wf_time_to_wait_3.storage,
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i_wf_refresh_start_3 = self.wf_refresh_start_3.storage,
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o_wf_refresh_finished_3 = self.wf_refresh_finished_3.status,
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o_wf_start_addr_3 = self.wf_start_addr_3.storage,
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o_wf_ram_dma_addr_3 = self.wf_sdram_3.sink.address,
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i_wf_ram_word_3 = self.wf_sdram_3.source.data,
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o_wf_ram_read_3 = self.wf_sdram_3.sink.valid,
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i_wf_ram_valid_3 = self.wf_sdram_3.source.valid,
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# dac_4
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i_dac_sel_4 = self.dac_sel_4.storage,
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o_dac_finished_4 = self.dac_finished_4.status,
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i_dac_arm_4 = self.dac_arm_4.storage,
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o_from_dac_4 = self.from_dac_4.status,
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i_to_dac_4 = self.to_dac_4.storage,
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i_wf_arm_4 = self.wf_arm_4.storage,
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i_wf_time_to_wait_4 = self.wf_time_to_wait_4.storage,
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i_wf_refresh_start_4 = self.wf_refresh_start_4.storage,
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o_wf_refresh_finished_4 = self.wf_refresh_finished_4.status,
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o_wf_start_addr_4 = self.wf_start_addr_4.storage,
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o_wf_ram_dma_addr_4 = self.wf_sdram_4.sink.address,
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i_wf_ram_word_4 = self.wf_sdram_4.source.data,
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o_wf_ram_read_4 = self.wf_sdram_4.sink.valid,
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i_wf_ram_valid_4 = self.wf_sdram_4.source.valid,
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# dac_5
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i_dac_sel_5 = self.dac_sel_5.storage,
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o_dac_finished_5 = self.dac_finished_5.status,
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i_dac_arm_5 = self.dac_arm_5.storage,
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o_from_dac_5 = self.from_dac_5.status,
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i_to_dac_5 = self.to_dac_5.storage,
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i_wf_arm_5 = self.wf_arm_5.storage,
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i_wf_time_to_wait_5 = self.wf_time_to_wait_5.storage,
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i_wf_refresh_start_5 = self.wf_refresh_start_5.storage,
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o_wf_refresh_finished_5 = self.wf_refresh_finished_5.status,
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o_wf_start_addr_5 = self.wf_start_addr_5.storage,
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o_wf_ram_dma_addr_5 = self.wf_sdram_5.sink.address,
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i_wf_ram_word_5 = self.wf_sdram_5.source.data,
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o_wf_ram_read_5 = self.wf_sdram_5.sink.valid,
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i_wf_ram_valid_5 = self.wf_sdram_5.source.valid,
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# dac_6
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i_dac_sel_6 = self.dac_sel_6.storage,
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o_dac_finished_6 = self.dac_finished_6.status,
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i_dac_arm_6 = self.dac_arm_6.storage,
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o_from_dac_6 = self.from_dac_6.status,
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i_to_dac_6 = self.to_dac_6.storage,
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i_wf_arm_6 = self.wf_arm_6.storage,
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i_wf_time_to_wait_6 = self.wf_time_to_wait_6.storage,
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i_wf_refresh_start_6 = self.wf_refresh_start_6.storage,
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o_wf_refresh_finished_6 = self.wf_refresh_finished_6.status,
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o_wf_start_addr_6 = self.wf_start_addr_6.storage,
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o_wf_ram_dma_addr_6 = self.wf_sdram_6.sink.address,
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i_wf_ram_word_6 = self.wf_sdram_6.source.data,
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o_wf_ram_read_6 = self.wf_sdram_6.sink.valid,
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i_wf_ram_valid_6 = self.wf_sdram_6.source.valid,
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# dac_7
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i_dac_sel_7 = self.dac_sel_7.storage,
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o_dac_finished_7 = self.dac_finished_7.status,
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i_dac_arm_7 = self.dac_arm_7.storage,
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o_from_dac_7 = self.from_dac_7.status,
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i_to_dac_7 = self.to_dac_7.storage,
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i_wf_arm_7 = self.wf_arm_7.storage,
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i_wf_time_to_wait_7 = self.wf_time_to_wait_7.storage,
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i_wf_refresh_start_7 = self.wf_refresh_start_7.storage,
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o_wf_refresh_finished_7 = self.wf_refresh_finished_7.status,
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o_wf_start_addr_7 = self.wf_start_addr_7.storage,
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o_wf_ram_dma_addr_7 = self.wf_sdram_7.sink.address,
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i_wf_ram_word_7 = self.wf_sdram_7.source.data,
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o_wf_ram_read_7 = self.wf_sdram_7.sink.valid,
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i_wf_ram_valid_7 = self.wf_sdram_7.source.valid,
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i_adc_sel_0 = self.adc_sel_0.storage,
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# adc_0
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o_adc_finished_0 = self.adc_finished_0.status,
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i_adc_arm_0 = self.adc_arm_0.storage,
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o_from_adc_0 = self.from_adc_0.status,
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# adc_1
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o_adc_finished_1 = self.adc_finished_1.status,
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i_adc_arm_1 = self.adc_arm_1.storage,
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o_from_adc_1 = self.from_adc_1.status,
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# adc_2
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o_adc_finished_2 = self.adc_finished_2.status,
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i_adc_arm_2 = self.adc_arm_2.storage,
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o_from_adc_2 = self.from_adc_2.status,
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# adc_3
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o_adc_finished_3 = self.adc_finished_3.status,
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i_adc_arm_3 = self.adc_arm_3.storage,
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o_from_adc_3 = self.from_adc_3.status,
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# adc_4
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o_adc_finished_4 = self.adc_finished_4.status,
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i_adc_arm_4 = self.adc_arm_4.storage,
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o_from_adc_4 = self.from_adc_4.status,
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# adc_5
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o_adc_finished_5 = self.adc_finished_5.status,
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i_adc_arm_5 = self.adc_arm_5.storage,
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o_from_adc_5 = self.from_adc_5.status,
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# adc_6
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o_adc_finished_6 = self.adc_finished_6.status,
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i_adc_arm_6 = self.adc_arm_6.storage,
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o_from_adc_6 = self.from_adc_6.status,
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# adc_7
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o_adc_finished_7 = self.adc_finished_7.status,
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i_adc_arm_7 = self.adc_arm_7.storage,
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o_from_adc_7 = self.from_adc_7.status,
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o_cl_in_loop = self.cl_in_loop.status,
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i_cl_cmd = self.cl_cmd.storage,
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i_cl_word_in = self.cl_word_in.storage,
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o_cl_word_out = self.cl_word_out.status,
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i_cl_start_cmd = self.cl_start_cmd.storage,
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o_cl_finish_cmd = self.cl_finish_cmd.status
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)
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# Clock and Reset Generator
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class _CRG(Module):
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def __init__(self, platform, sys_clk_freq, with_dram=True, with_rst=True):
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self.rst = Signal()
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self.clock_domains.cd_sys = ClockDomain()
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self.clock_domains.cd_eth = ClockDomain()
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if with_dram:
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self.clock_domains.cd_sys4x = ClockDomain()
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self.clock_domains.cd_sys4x_dqs = ClockDomain()
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self.clock_domains.cd_idelay = ClockDomain()
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# Clk/Rst.
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clk100 = platform.request("clk100")
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rst = ~platform.request("cpu_reset") if with_rst else 0
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# PLL.
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self.submodules.pll = pll = S7PLL(speedgrade=-1)
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self.comb += pll.reset.eq(rst | self.rst)
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pll.register_clkin(clk100, 100e6)
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pll.create_clkout(self.cd_sys, sys_clk_freq)
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pll.create_clkout(self.cd_eth, 25e6)
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self.comb += platform.request("eth_ref_clk").eq(self.cd_eth.clk)
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platform.add_false_path_constraints(self.cd_sys.clk, pll.clkin) # Ignore sys_clk to pll.clkin path created by SoC's rst.
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if with_dram:
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pll.create_clkout(self.cd_sys4x, 4*sys_clk_freq)
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pll.create_clkout(self.cd_sys4x_dqs, 4*sys_clk_freq, phase=90)
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pll.create_clkout(self.cd_idelay, 200e6)
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# IdelayCtrl.
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if with_dram:
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self.submodules.idelayctrl = S7IDELAYCTRL(self.cd_idelay)
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class CryoSNOM1SoC(SoCCore):
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def __init__(self, variant):
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sys_clk_freq = int(100e6)
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platform = board_spec.Platform(variant=variant, toolchain="f4pga")
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self.submodules.crg = _CRG(platform, sys_clk_freq, True)
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platform.add_source("rtl/spi/spi_switch_preprocessed.v")
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platform.add_source("rtl/spi/spi_master_preprocessed.v")
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platform.add_source("rtl/spi/spi_master_no_write_preprocessed.v")
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platform.add_source("rtl/spi/spi_master_no_read_preprocessed.v")
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platform.add_source("rtl/spi/spi_master_ss_preprocessed.v")
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platform.add_source("rtl/spi/spi_master_ss_no_write_preprocessed.v")
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platform.add_source("rtl/spi/spi_master_ss_no_read_preprocessed.v")
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platform.add_source("rtl/control_loop/sign_extend.v")
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platform.add_source("rtl/control_loop/intsat.v")
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platform.add_source("rtl/control_loop/boothmul.v")
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platform.add_source("rtl/control_loop/control_loop_math.v")
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platform.add_source("rtl/control_loop/control_loop.v")
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platform.add_source("rtl/waveform/bram_interface_preprocessed.v")
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platform.add_source("rtl/waveform/waveform_preprocessed.v")
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platform.add_source("rtl/base/base.v")
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# SoCCore does not have sane defaults (no integrated rom)
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SoCCore.__init__(self,
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clk_freq=sys_clk_freq,
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toolchain="symbiflow",
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platform = platform,
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bus_standard = "wishbone",
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ident = f"Arty-{variant} F4PGA LiteX VexRiscV Zephyr CryoSNOM1 0.1",
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bus_data_width = 32,
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bus_address_width = 32,
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bus_timeout = int(1e6),
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cpu_type = "vexriscv",
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integrated_rom_size=0x20000,
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integrated_sram_size = 0x2000,
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csr_data_width=32,
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csr_address_width=14,
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csr_paging=0x800,
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csr_ordering="big",
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timer_uptime = True)
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# This initializes the connection to the physical DRAM interface.
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self.submodules.ddrphy = s7ddrphy.A7DDRPHY(platform.request("ddram"),
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memtype = "DDR3",
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nphases = 4,
|
|
sys_clk_freq = sys_clk_freq)
|
|
# Synchronous dynamic ram. This is what controls all access to RAM.
|
|
# This houses the "crossbar", which negotiates all RAM accesses to different
|
|
# modules, including the verilog interfaces (waveforms etc.)
|
|
self.add_sdram("sdram",
|
|
phy = self.ddrphy,
|
|
module = MT41K128M16(sys_clk_freq, "1:4"),
|
|
l2_cache_size = 8192
|
|
)
|
|
self.submodules.ethphy = LiteEthPHYMII(
|
|
clock_pads = platform.request("eth_clocks"),
|
|
pads = platform.request("eth"))
|
|
self.add_ethernet(phy=self.ethphy, dynamic_ip=True)
|
|
|
|
# Add the DAC and ADC pins as GPIO. They will be used directly
|
|
# by Zephyr.
|
|
platform.add_extension(io)
|
|
self.submodules.base = Base(ClockSignal(), self.sdram, platform)
|
|
|
|
def main():
|
|
soc = CryoSNOM1SoC("a7-35")
|
|
builder = Builder(soc, csr_json="csr.json", compile_software=False)
|
|
builder.build()
|
|
|
|
if __name__ == "__main__":
|
|
main()
|